Humidifier for breathing machine and breathing machine

Abstract

The utility model discloses a humidifier for a breathing machine and the breathing machine. The humidifier comprises a shell, a cavity formed in the shell and an air channel structure arranged in the shell and communicated with the cavity. The air channel structure comprises an air inlet pipe allowing air to flow into the cavity and an air outlet pipe allowing the air to flow out of the cavity. The air inlet pipe comprises a first air inlet communicated with the outside, a first air outlet communicated with the cavity and a flow guide pipe communicated with the first air inlet and the first air outlet, the flow guide pipe comprises a first guide wall and a second guide wall which define the first air outlet, and the first guide wall protrudes out of the second guide wall in the direction away from the first air outlet; and the guiding effect is achieved on airflow diffusion of the first air outlet, and airflow of the first air outlet is prevented from diffusing towards the shell.

Description

Technical Field

[0001] The utility model relates to the field of medical devices, in particular to a humidifier for a ventilator and a ventilator. Background Art

[0002] Ventilators are usually used to relieve and improve symptoms such as snoring, hypoventilation, and sleep apnea during a patient's sleep. Common ventilators include a main unit assembly and a humidifier assembly. The humidifier assembly is arranged in the gas path, and water can be stored inside it to humidify the flowing gas, thereby avoiding discomfort caused by overly dry gas entering the patient's respiratory tract and improving the comfort of the patient's use.

[0003] Due to the typical scenario of using a ventilator during sleep, there are high requirements for its noise performance. As one of the main noise radiation sources of the ventilator, reducing the noise of the humidifier can greatly improve the comfort of the patient's use. Summary of the Utility Model

[0004] One of the purposes of the utility model is to provide a humidifier for a ventilator to solve the technical problem of high noise of the humidifier in the prior art.

[0005] One of the purposes of the utility model is to provide a ventilator.

[0006] To achieve one of the above-mentioned purposes of the utility model, an embodiment of the utility model provides a humidifier for a ventilator, including a housing, a cavity formed in the housing, and an airway structure arranged in the housing and communicating with the cavity; the airway structure includes an inlet pipe for gas to flow into the cavity and an outlet pipe for gas to flow out of the cavity; the inlet pipe includes a first air inlet for communicating with the outside, a first air outlet for communicating with the cavity, and a diversion pipe connecting the first air inlet and the first air outlet. The diversion pipe includes a first guiding wall and a second guiding wall surrounding and forming the first air outlet. Along the direction away from the first air outlet, the first guiding wall protrudes from the second guiding wall.

[0007] As a further improvement of an embodiment of the utility model, the diversion pipe is sequentially bent along the gas flow transmission path to form a first section, a second section, and a third section. The first section includes the first air inlet, and the third section includes the first air outlet, the first guiding wall, and the second guiding wall. The direction away from the first air outlet coincides with the axial direction of the third section.

[0008] As a further improvement of an embodiment of the utility model, the horizontal interval arrangement direction of the first section and the outlet pipe is the transverse direction, and the third section is located below the outlet pipe; the first guiding wall and the second guiding wall are located on opposite sides of the third section along the transverse direction, and the second guiding wall is closer to the first section than the first guiding wall along the transverse direction.

[0009] As a further improvement of an embodiment of the present utility model, the first guiding wall is an arc-shaped pipe wall, the second guiding wall is an arc-shaped pipe wall, the first guiding wall and the second guiding wall are located on the same circular pipe wall, the radian range corresponding to the first guiding wall is 150°-180°, and the radian range corresponding to the second guiding wall is 150°-180°.

[0010] As a further improvement of an embodiment of the present utility model, the lowest point of the first guiding wall along its circumferential direction coincides with the lowest point of the second guiding wall along its circumferential direction.

[0011] As a further improvement of an embodiment of the present utility model, the lowest point of the first guiding wall along its circumferential direction coincides with the lowest point of the third section.

[0012] As a further improvement of an embodiment of the present utility model, the direction in which the first section and the air outlet pipe are horizontally arranged at intervals is transverse, the third section is located below the air outlet pipe, the highest point of the first guiding wall along its circumferential direction is connected to the air outlet pipe, and the highest point of the second guiding wall along its circumferential direction is connected to the air outlet pipe.

[0013] As a further improvement of an embodiment of the present utility model, the contour of the first air outlet includes the edge of the first guiding wall and the edge of the second guiding wall; along the transverse direction, when observing from the first section towards the air outlet pipe, the contour of the first air outlet is rectangular; when observing along the axial direction of the first air outlet, the contour of the first air outlet is arc-shaped, and the radian range of the arc is 300°-360°.

[0014] As a further improvement of an embodiment of the present utility model, the second section is inclined in the vertical direction, and the included angle formed by the second section and the horizontal plane ranges from 5° to 60°.

[0015] To achieve one of the above-mentioned utility model purposes, an embodiment of the present utility model further provides a ventilator, including a main machine, a breathing mask, and a humidifier for a ventilator according to any one of the above technical solutions. The main machine includes an air flow driving device, the air flow driving device is communicated with the air inlet pipe, and the breathing mask is communicated with the air outlet pipe.

[0016] Compared with the prior art, for the humidifier for a ventilator provided by the present utility model, the first guiding wall protrudes relatively more than the second guiding wall, so as to further guide the air flow at the first air outlet, prevent the air flow at the first air outlet from diffusing towards the housing direction, and weaken the noise generated by the air flow directly impacting the housing of the humidifier. Description of the Drawings

[0017] Figure 1 It is a perspective view of a humidifier in an embodiment of the present utility model.

[0018] Figure 2 It is an exploded view of a humidifier in an embodiment of the present utility model.

[0019] Figure 3 It is a schematic view of a humidifier in an open state in an embodiment of the present utility model.

[0020] Figure 4 It is a side view of an airway structure in an embodiment of the present utility model.

[0021] Figure 5 It is a front view of an airway structure in an embodiment of the present utility model.

[0022] Figure 6 It is a rear view of an airway structure in an embodiment of the present utility model.

[0023] Figure 7 It is a cross-sectional view of a humidifier in an embodiment of the present utility model.

[0024] Figure 8 It is a cross-sectional view of a humidifier from another angle in an embodiment of the present utility model. Specific Embodiments

[0025] The present utility model will be described in detail below in conjunction with the specific embodiments shown in the drawings. However, these embodiments do not limit the present utility model, and any structural, method, or functional transformation made by those of ordinary skill in the art based on these embodiments is included within the protection scope of the present utility model.

[0026] Spatial relative position terms such as "upper", "above", "lower", "below", etc. used herein are for the purpose of facilitating description to describe the relationship of one unit or feature relative to another unit or feature as shown in the drawings. The spatial relative position terms are intended to include different orientations of the device in use or operation other than the orientation shown in the figures. For example, if the device in the figure is flipped, the unit described as being "below" or "beneath" another unit or feature will be located "above" another unit or feature. Therefore, the exemplary term "below" can encompass both the upper and lower orientations. The device can be oriented in other ways (rotated 90 degrees or other orientations), and the spatially related descriptive terms used herein can be interpreted accordingly.

[0027] The present utility model provides a humidifier 100 for a ventilator. Please refer to Figure 1 the structural schematic diagram. The humidifier 100 has an air inlet end 101 and an air outlet end 102. After the gas flows through the inside of the humidifier 100, it is humidified and then enters the patient's respiratory tract, improving the patient's comfort during use.

[0028] The present utility model further provides a ventilator, which includes a main unit, a breathing mask, and the humidifier 100. The main unit includes an air flow driving device, the air flow driving device is connected to the air inlet end 101 of the humidifier 100, and the breathing mask is connected to the air outlet end 102 of the humidifier 100.

[0029] In this way, when the ventilator works, the air flow driving device drives gas to enter the humidifier 100 through the air inlet end 101, mixes with the water vapor generated by heating the stored water in the humidifier 100, and then is supplied to the breathing mask end through the air outlet end 102 to provide humidified air supply to the patient.

[0030] In one embodiment, the air flow driving device is generally a turbo fan. When the turbo fan works, it rotates at a high speed to transfer mechanical energy to the gas and convert it into the kinetic energy of the gas. During the high-speed rotation process of the turbo fan, noise is also generated. The noise enters the humidifier cavity 103 through the air inlet end 101 of the humidifier along with the air flow, and then penetrates through the humidifier 100 to radiate noise to the outside.

[0031] In one embodiment, the humidifier 100 includes a housing 10, a cavity 103 formed inside the housing 10, and an airway structure 20 disposed inside the housing 10 and communicating with the cavity 103. The airway structure 20 includes an air inlet pipe 30 for gas to flow into the cavity 103 and an air outlet pipe 40 for gas to flow out of the cavity 103.

[0032] Specifically, as shown in Figures 2-3 Figures 8, the housing 10 includes a first housing 11 and a second housing 13. The first housing 11 and the second housing 13 are assembled along the vertical direction and jointly enclose to form the cavity 103. The cavity 103 includes a first cavity 1031 located in the first housing 11 and a second cavity 1032 located in the second housing 13. The airway structure 20 is disposed in the first cavity 1031, and the second cavity 1032 is used for storing water.

[0033] One end of the first housing 11 and the second housing 13 is rotatably connected, specifically through a rotating shaft. The other end of the first housing 11 can be opened or closed relative to the other end of the second housing 13 to open or close the second cavity 1032, which is convenient for adding water or repairing and disassembling the airway structure 20.

[0034] A sealing strip 50 is provided between the first housing 11 and the second housing 13. When the first housing 11 and the second housing 13 are in a closed and buckled state, the sealing strip 50 is in a compressed state, which can achieve the sealing between the first cavity 1031 and the second cavity 1032 of the humidifier, and prevent gas leakage and sound leakage from the inside of the cavity of the humidifier 100 to the outside.

[0035] The first housing 11 is provided with the air inlet end 101 and the air outlet 103. The air inlet end 101 is communicated with the intake pipe 30 of the airway structure 20. In other words, one end of the air inlet end 101 is connected to the air flow driving device, and the other end is connected to the intake pipe 30, so as to input gas into the first cavity 1031. Specifically, a plug-in portion is provided on the inner wall surface of the first housing 11 corresponding to the air inlet end 101. The intake pipe 30 is in plug-in and sealing cooperation with the plug-in portion. If the humidifier is in a tilted state, the water in the cavity 103 cannot enter the intake pipe 30 or the air inlet end 101 through the connection between the intake pipe 30 and the plug-in portion, preventing water from being poured back into the air flow driving device.

[0036] The outlet pipe 40 of the airway structure 20 is communicated with the air outlet end 102. In other words, one end of the air outlet is connected to the outlet pipe 40, and the other end is connected to the breathing mask, so as to output the humidified gas from the first cavity 1031 and output it to the breathing mask. Specifically, a plug-in portion is provided on the inner wall surface of the first housing 11 corresponding to the air outlet end 102. The outlet pipe 40 is in plug-in and sealing cooperation with the plug-in portion. If the humidifier is in a tilted state, the water in the cavity 103 cannot enter the outlet pipe 40 or the air outlet end 102 through the connection between the outlet pipe 40 and the plug-in portion, preventing water from being directly poured back into the breathing mask.

[0037] In one embodiment, the airway structure 20 is integrally formed, with a simple structure and simple process.

[0038] In one embodiment, the airway structure 20 is detachably fixed to the first housing 11.

[0039] Combined Figures 4-6 As shown, the airway structure 20 has a first buckle structure 21, and the housing 10 has a second buckle structure 111 that cooperates with the first buckle structure 21.

[0040] Specifically, the front end of the airway structure 20 is inserted and fixed to the front wall of the first housing through the intake pipe 30 and the outlet pipe 40. The first buckle structure 21 is provided at the rear end of the airway structure 20. The first buckle structure 21 includes an elastic wall 211 and a hook 212. The elastic wall 211 extends downward and backward obliquely. The second buckle structure 111 includes a hook groove 112 provided on the rear wall of the first housing 11. The hook 212 is clamped and fixed in the hook groove.

[0041] Combined Figure 7 As shown, the arrangement of the elastic wall 211 is conducive to the subsequent disassembly of the airway structure 20. By pressing the elastic wall 211 forcefully, the hook 212 can be disengaged from the hook groove, and then the front end of the airway structure 20 can be pulled out from the front wall of the first housing 11. In this way, the airway structure 20 can be detachably installed and fixed, facilitating the user to disassemble the airway structure 20 and clean the interior of the humidifier 100.

[0042] The airway structure 20 has a first positioning structure 22, and the housing 10 has a second positioning structure 113 that cooperates with the first positioning structure 22.

[0043] Specifically, the first positioning structure 22 includes a positioning groove provided at the center of the top of the airway structure 20, and the second positioning structure 113 includes a positioning block provided on the top wall of the first housing 11. After the positioning groove and the positioning block are assembled and matched, the airway structure 20 is limited.

[0044] In one embodiment, the intake pipe 30 includes a first air inlet 301 for communicating with the outside, a first air outlet 302 for communicating with the cavity 103, and a diversion pipe connecting the first air inlet 301 and the first air outlet 302. The gas from the air flow driving device sequentially enters the intake end 101, the first air inlet 301, and the diversion pipe, and then enters the cavity 103 through the first air outlet 302.

[0045] The shown outlet pipe 40 includes a second air inlet 402 for communicating with the cavity 103 and a second air outlet 401 for communicating with the outside. The outside gas enters the cavity 103 through the intake pipe 30. After being humidified, the gas sequentially passes through the second air inlet 402, the second air outlet 401, and the outlet end 102, and then enters the breathing mask end for the patient to inhale.

[0046] The diversion pipe includes a first guiding wall 34 and a second guiding wall 35 that enclose to form the first air outlet 302. Along the direction away from the first air outlet 302, the first guiding wall 34 protrudes beyond the second guiding wall 35.

[0047] Specifically, when the air flow enters the cavity 103 from the first air outlet 302, under the joint restriction of the first guiding wall 34 and the second guiding wall 35, the air flow has a tendency to diffuse towards the side of the second guiding wall 35. Because the first guiding wall 34 is relatively long, it will block the air flow path, causing the air flow to be reflected by the first guiding wall 34 and diffuse along the side towards the second guiding wall 35.

[0048] Thus, on the one hand, the deflection of the air flow can be changed to prevent it from flowing towards the housing, weakening the flow-induced noise generated by the air flow impacting the humidifier housing; on the other hand, the structure is simple but can be applied to any application scenario where the deflection of the air flow needs to be changed.

[0049] The guide pipe is sequentially bent to form a first section 31, a second section 32, and a third section 33 along the air flow transmission path. The guide pipe is arranged in a U shape. The second section 32 is inclined in the vertical direction. The first section 31 and the third section 33 have a height difference. The included angle between the second section 32 and the horizontal plane ranges from 5° to 60°.

[0050] The first section 31 includes the first air inlet 301. The third section 33 includes the first air outlet 302, a first guide wall 34, and a second guide wall 35. The direction away from the first air outlet 302 coincides with the axis of the third section 33.

[0051] In other words, the first guide wall 34 and the second guide wall 35 also extend along the axis of the third section 33 and are consistent with the air flow transmission direction in the third section 33.

[0052] The air flow direction in the first section 31 is parallel but opposite to the air flow direction in the third section 33. In other words, the air inlet direction of the first section 31 is parallel and opposite to the air outlet direction of the third section 33.

[0053] The direction in which the first section 31 and the outlet pipe 40 are horizontally spaced apart is the transverse direction. The third section 33 is located below the outlet pipe 40. The first guide wall 34 and the second guide wall 35 are located on opposite sides of the third section 33 in the transverse direction. The second guide wall 35 is closer to the first section 31 in the transverse direction relative to the first guide wall 34.

[0054] Specifically, the inlet pipe 30 has an air flow guiding function. The outer sides of the first section 31 and the outlet pipe 40 in the transverse direction are close to the two side walls of the housing 10. The position between the first section 31 and the outlet pipe 40 is equivalent to the middle position of the humidifier 100 in the transverse direction. The first guide wall 34 is closer to the side wall of the housing 10 in the transverse direction relative to the second guide wall 35. Thus, the diffusion of the air flow towards the side wall of the housing 10 can be prevented. On the contrary, the air flow is guided to diffuse towards the middle position of the humidifier 100 in the transverse direction, weakening the flow-induced noise generated by the air flow impacting the housing 10.

[0055] On the other hand, the intake pipe 30 has a sound guiding effect, changing the position and direction of the noise radiated from the first air outlet 302 into the humidifier cavity 103. The first section 31, the second section 32, and the third section 33 are sequentially bent, and are arranged in a U shape in a specific embodiment. After being reversely bent, the first air outlet 302 is far from the rear side wall of the housing 10 and faces the air outlet end 102. That is, the noise radiated from the first air outlet 302 into the humidifier 100 is guided to the middle position in the front of the humidifier and the direction is changed to face the direction of the external main unit. In this way, on the one hand, the detour of the noise propagation path will gradually decrease. On the other hand, the noise does not directly reach the rear side wall after coming out, and is far from the rear side wall of the housing 10, reducing the secondary noise generated by the impact and at the same time reducing the noise energy transmitted out of the humidifier cavity 103.

[0056] The first guiding wall 34 is an arc-shaped pipe wall, the second guiding wall 35 is an arc-shaped pipe wall, the first guiding wall 34 and the second guiding wall 35 are located on the same circular pipe wall, the arc range corresponding to the first guiding wall 34 is 150°-180°, and the arc range corresponding to the second guiding wall 35 is 150°-180°. The first guiding wall 34 and the second guiding wall 35 only correspond to different positions along the circumferential direction.

[0057] The lowest point of the first guiding wall 34 along its circumferential direction coincides with the lowest point of the second guiding wall 35 along its circumferential direction.

[0058] In a specific embodiment, the arc-shaped pipe wall formed by connecting the first guiding wall 34 and the second guiding wall 35 is the pipe wall of the third section 33. The lowest point of the first guiding wall 34 along its circumferential direction coincides with the lowest point of the third section 33.

[0059] The highest point of the first guiding wall 34 along its circumferential direction is connected to the air outlet pipe 40, and the highest point of the second guiding wall 35 along its circumferential direction is connected to the air outlet pipe 40.

[0060] In one embodiment, the highest point of the first guiding wall 34 and the highest point of the second guiding wall 35 can be connected to the same place of the air outlet pipe 40. In this way, the first guiding wall 34 and the second guiding wall 35 form a complete circle. That is, the third section 33 is a complete circular pipe wall, and the highest point of the third section 33 is connected to the air outlet pipe 40.

[0061] In another embodiment, the highest point of the first guiding wall 34 and the highest point of the second guiding wall 35 can be connected to different places of the air outlet pipe 40. In this way, the first guiding wall 34 and the second guiding wall 35 can only form an arc. That is, the third section 33 is an arc-shaped pipe wall, and the bottom of the air outlet pipe 40 covers the top of the third section 33.

[0062] Combined with Figures 4-5As shown, the contour of the first air outlet 302 includes the end edges of the first guiding wall 34 and the second guiding wall 35; in the transverse direction, when observing from the first section 31 towards the air outlet pipe 40, the contour of the first air outlet 302 is rectangular; when observing along the axial direction of the first air outlet 302, more specifically, when observing along the air inlet direction of the first section 31, the contour of the first air outlet 302 is arc-shaped, and the radian range of the arc is 300°-360°.

[0063] The beneficial effects of the present utility model are as follows: The setting of the first guiding wall 34 and the second guiding wall 35 can, on the one hand, change the direction of the airflow, prevent it from flowing towards the housing 10, and weaken the flow-induced noise generated by the airflow impacting the humidifier housing 10; on the other hand, the structure is simple but can be applied to any application scenario where the airflow direction needs to be changed.

[0064] It should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0065] The series of detailed descriptions listed above are only specific descriptions of the feasible embodiments of the present utility model, and they are not used to limit the protection scope of the present utility model. Any equivalent embodiments or changes made without departing from the technical spirit of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A humidifier for a ventilator, characterized in that: It includes a shell, a cavity formed in the shell, and an airway structure arranged in the shell and connected to the cavity; the airway structure includes an air inlet pipe for gas to flow into the cavity and an air outlet pipe for gas to flow out of the cavity; the air inlet pipe includes a first air inlet for connecting to the outside, a first air outlet for connecting to the cavity, and a guide pipe connecting the first air inlet and the first air outlet, and the guide pipe includes a first guide wall and a second guide wall surrounding the first air outlet, and the first guide wall protrudes out of the second guide wall in a direction away from the first air outlet.

2. The humidifier for a breathing machine according to claim 1, characterized in that: The guide tube is bent in sequence along the airflow transmission path to form a first section, a second section and a third section, the first section includes the first air inlet, the third section includes the first air outlet, a first guide wall and a second guide wall, and the direction away from the first air outlet coincides with the axial direction of the third section.

3. The humidifier for a breathing machine according to claim 2, characterized in that: The first section and the air outlet pipe are arranged horizontally in a spaced-apart direction, and the third section is located below the air outlet pipe; the first guide wall and the second guide wall are located on opposite sides of the third section in the transverse direction, and the second guide wall is close to the first section in the transverse direction relative to the first guide wall.

4. The humidifier for a breathing machine according to claim 2, characterized in that: The first guide wall is an arc-shaped tube wall, the second guide wall is an arc-shaped tube wall, the first guide wall and the second guide wall are located on the same circular tube wall, the first guide wall corresponds to an arc range of 150°-180°, and the second guide wall corresponds to an arc range of 150°-180°.

5. The humidifier for a breathing machine according to claim 4, characterized in that: The lowest point of the first guide wall along its circumferential direction coincides with the lowest point of the second guide wall along its circumferential direction.

6. The humidifier for a breathing machine according to claim 5, characterized in that: The lowest point of the first guide wall along its circumferential direction coincides with the lowest point of the third section.

7. The humidifier for a breathing machine according to claim 4, characterized in that: The first section and the air outlet pipe are arranged horizontally at intervals in a lateral direction, the third section is located below the air outlet pipe, the highest point of the first guide wall along its circumferential direction is connected to the air outlet pipe, and the highest point of the second guide wall along its circumferential direction is connected to the air outlet pipe.

8. The humidifier for a breathing machine according to claim 7, characterized in that: The contour of the first air outlet includes the end edge of the first guide wall and the end edge of the second guide wall; in the transverse direction, when observed from the first section toward the air outlet pipe, the contour of the first air outlet is rectangular; in the axial direction of the first air outlet, the contour of the first air outlet is arc-shaped, and the arc range of the arc is 300°-360°.

9. The humidifier for a breathing machine according to claim 2, characterized in that: The second section is inclined along the vertical direction, and the angle formed by the second section and the horizontal plane is in the range of 5°-60°.

10. A ventilator, characterized in that: It comprises a host, a breathing mask and a humidifier for a ventilator according to any one of claims 1 to 9, wherein the host comprises an airflow driving device, the airflow driving device is connected to the air inlet pipe, and the breathing mask is connected to the air outlet pipe.

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